Tech just left about half an our ago...
Both cards are working (all digital subscribed channels are viewable) in my TiVo, but the person on the other end of the phone line when the tech called said that they had pairing errors. They THINK it might be from weak signal, or a bad DAC on their end.
I have cablecards in my TV and in my SOny HDD250, and they both say "Valid" next to the "Host validation" line. The TiVo cards both say "unknown" in this field. I hope this doesn't cause problems down the road.
The strange thing about this install is that it went EXACTLY like the failed install that was done a week ago for a Sony Bravia TV in our bedroom. They put the card in, called in the numbers, the TV was seeing all of the premium channels that it should, but they kept saying that the card wouldn't pair on the other end of the phone. They set up a reschedule, and as I was going through the menus on the TV, I accidentally pressed the "reset" instead of "show" on the cablecard menu. This knocked out all of my access to premium channels.
Today they were supposed to try another card in that TV too, but I wanted to start with the Tivo since it is the more important device to me. Once we got the Tivo into a state where all channels were visible, we went upstairs to try the other TV. He popped out the card, read the number on the card, put it back in, and we tried a premium channel. IT WORKED! We suspect that the "hits" and balancing that they did while we were trying to get the Tivo working might have restored the channels on the other TV.
I am still concerned that it wasn't done right, and they might have to come out again.
He thinks I might need an amp to supply enough signal for all 5 of my CC's (4 of which are on the same outlet in the house).